ELECTROCHEMICAL CELL WITH INWARDLY NARROWING BARRIER

摘要

ELECTROCHEMICAL CELL WITH INWARDLY NARROWING BARRIER An electrochemical gas sensor for detecting the amount of a gas or vapour in an atmosphere is described having a sensing electrode and a barrier limiting the rate of access of the gas or vapour to the sensing electrode, the barrier being made of ceramics material and having an inwardly-tapering shape.